Nail-chuck.



(Application led June 13V, 1901.)

(No Model.)

UNITED STATES `PATENT OFFICE.

JOHN A. MILLIKEN, OF FLUSHING, NEW YORK, ASSIGNOR TO EMMA DOIG,

EXEOUTRIX OF WILLIAM S. DOIG, DEOEASED. Y

NAIL-CHUCK.

SPECIFICATION forming part of Letters Patent N0..691,725, dated January21, 1902.

Application filed June 13, 1901. Serial No. 64,473. (No model.)

To all whom, t may concern,.-

Be it known that I, JOHN A. MILLIKEN, a citizen of the United States,residing at Flushing, county of Queens, and State of New York, haveinvented certain new and useful Improvements in Nail-Chucks, of whichthe fol-- y bodied, irrespective of the use to which said structure maybe designed.

In the accompanying drawings I have shown a nail-chuck embodying myinvention.

In the drawings, Figure 1 is a vertical section through the chuck,showing its interior construction. Fig. 2 is a section through the chuckon line 2 2. Fig. 3 is a section through Fig. 2 on line 3 3 thereof, andFig. 4 is a detail sectional view showing the construction by which thenail-punch is secured adjustably to the nail-driving cross-head.

In the drawings the chuck-body lis shown as a single casting providedwith a nail-chute 2 and with pins or studs 3 4, from which thenail-holding jaws 5 6 are suspended.` In the present instance the jaw 6is shown as a re'- movable jaw. The chuck-body is also provided with anaperture 7 for the passage of the nail-punch 8. The chuck-body is boredlaterally for the reception of two sleeves 9 1Q. These sleeves carrysprings 11 12, which bear upon the jaws 5 6 and whose tension upon thejaws is adjusted by tension-screws 13 14. Each of these sleeves isprovided with a lug 15. A transverse opening 16 is bored through thechuck-body at each end, and the edge of the chuck-body is slotted, aswith a slot 17, to receive the lug 15.

It is believed that the general operation ofv the structure will beobvious from this description and drawings. The leading inventive ideaof the structure will now be fully eX- plained.

It is well known that considerable trouble is caused in chucks as atpresent constructed by the frequent jamming thereinof a bent orirregularly-made nail, land considerable time 'with its spring, may beremoved and the jaw 6, which is'open-journaled on pin 4, may be vremovedand the defective nail or other cause of jamming also removed. The partsmay now bereplaced and the nailing operation continued. provided meanswhereby the chuck may be taken apart and put together wit-houtdisturbing the adjustmentof the springs, as in making the changeshereinbefore referred to it is unnecessary to disturb the adjustment ofthe screws 13 14. I have also shown means whereby thenail-punch 8 may besecured to the nail-'driving cross-head.

Referring particularly to Figs. 1 and 4, the nail-punch 8 is carried byahead 1S, which is slotted for the reception of a T-shaped key 19,carried bylan eXtension-bracket20, secured to the nail-d rivingcross-head. A spring stud or pin 20, carried in the head 1S, engages thekey 19 frictionally, so that the nail-punch may be adjusted along thesaid extension-bracket and will be frictionally held in place by the pin20a. In order that the key 19 of the eX- 'tension-bracket may easilyenter the slot in the head,A the forward end of the keymay be rounded,as shown, or otherwise cut away, in order that a wedging action may takeplace, so as to depress the spring stud or pin.-

Having described my invention, what I claim, and desire to secure byLetters Patent, ls-

1. In a nail-chuck the combination of mov- It will be observed that Ihave thus` able nail-guiding jaws,spring means for holding the jaws upto their work, adjusting means for the spring means,the said adjustingmeans and spring mea'nsnbeing :removable from the chuck' Withoutdisturbing the adjustment of the adjusting means whereby spring-pressureon the nail-guidingjaws may be relieved without disturbing theadjustment.

2. In a nail-chuck the combination of the IOOv nail-guiding jaws withone or more spring holding members provided with spring-adjusting means,said spring-holding member or members being removable from the chuckwithout disturbing the adjustment.

3. In a nail-chuck the combination of naillguiding jaws with one or moretubular springholding members provided with an adjusting means foradjusting spring tension and a removable connection intervening betweenthe said tubular member or members whereby the said tubular member ormembers may be removed without disturbing the adjustment of theadjusting means.

4. A nail-chuck provided with a removable jaw under spring tension and aremovable spring carrier or carriers whereby the springcarrer and jawmay be removed to permit the extraction of a defective nail.

5. In a nail-chuck the combination of the nail-guiding jaws and aremovable spring carrier or carriers provided with adjusting meanswhereby the spring carrier or carriers may be removed from the chuckwithout disturbing the adjustment of the spring tension.

6. In a nail-chuck the combination of nailguiding jaws and one or moreremovable spring-carriers with a springladjusting means, carried by thecarrier and wholly independent of the removable connection between thecarrier and the chuck whereby the springpressure on the jaws may berelieved to remove a defective nail without disturbing the adjustment ofthe spring-pressure.

7. In a nail-chuck the combination of nailguid ingjaws and a pluralityof tubular springcarriers, each removably connected with the nail-chuckand provided with spring-adjusting means.

8. In a nailchuck the combination of nailgniding jaws with springsbearing thereon; and one or more spring-carriers removably seated inholes in the body of the nail-chuck.

9. In a nail-chuck the combination of nailguiding jaws and a pluralityof springs and spring-carriers removably connected to the chuck-body bypin-and-slot connections.

10. The combination of a laterally-apertured nail-chuck having slotsleading to the apertures, nail-guiding jaws and a plurality of springcarriers, each having adjusting means and a pin orlug for removablyengaging the slots of the apertures.

In testimony whereof I have signed my name to this specification, in thepresence of -two subscribing witnesses, this 7th day of June, 1901.

JOHN A. MILLIKEN.

Witnesses:

JOHN W. FRASER, WILLIAM T. GARDNER.

